Product Details
Description
SSP-G 16×13 QMB139 Roller Weight Tuning Kit
Key Details
- 169-448
Specifications
- Width: 13mmIncludes 3 Pc Sets of 3g, 4g, 5g, 6g, 7g, 8g, 9g, 10g, 11g, 12g, 13g and 14g Rollers SUPPORTED MODELS: QMB139 50cc/49cc , Various unlisted makes/models
Replacement Part Details
Use this part when the original component is worn, damaged, missing, or no longer working correctly. Many scooter parts can look similar but use different sizes, plugs, brackets, thread patterns, or mounting styles, so careful comparison before purchase is recommended.
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 49cc, 50cc, QMB139
- Engine Code: QMB139
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Will this fit a QMB139 engine?
A: This SKU is listed as compatible with QMB139 engine-code fitment. Always compare your original part and scooter details before ordering.
Q: Is this for 49cc scooters?
A: This SKU is listed with 49cc engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 0.95 lbs |
|---|---|
| Dimensions | 11 × 7 × 2 in |
| Size | 16×13 |
Fine-tune your CVT variator with precision using the SSP-G 16x13 Roller Weight Tuning Kit, designed specifically for 50cc 4-stroke QMB139 engines. Instead of buying individual roller sets one at a time, this all-in-one kit gives you 12 complete weight options — from 3g to 14g — so you can dial in the perfect setup for your riding style and engine configuration.
- Roller diameter: 16mm
- Roller width: 13mm
- Includes 3-piece sets of: 3g, 4g, 5g, 6g, 7g, 8g, 9g, 10g, 11g, 12g, 13g, and 14g rollers (36 rollers total)
- Combine two sets in an alternating pattern to achieve half-gram increments (e.g., 3x 5g + 3x 6g = 5.5g effective weight)
- Designed for tuning and testing — not intended for permanent long-term use
- Compatible with QMB139 50cc/49cc engines and various unlisted makes/models
Important: Rollers must be installed in an alternating pattern. Failure to do so will cause a severe imbalance in the variator. Once your ideal weight is determined, replace it with a full permanent roller set.Â





